EP 0731351 A3 19970402 - Method and apparatus for measuring combustible gas component by burning the component
Title (en)
Method and apparatus for measuring combustible gas component by burning the component
Title (de)
Verfahren und Vorrichtung zur Messung von einer brennbaren Gaskomponente durch Verbrennung des Komponentes
Title (fr)
Méthode et appareil pour mesurer un composant de gaz combustibles en brûlant le composant
Publication
Application
Priority
JP 4950495 A 19950309
Abstract (en)
[origin: EP0731351A2] An apparatus for measuring a combustible gas component of a subject gas in an external subject gas space, including a first processing zone (6, 44) communicating with the subject gas space (12, 58), a second processing zone (8, 44) communicating with the first processing zone, and a first and a second pumping cell (4a, 16, 18, 4c, 28, 30) exposed to the first and second processing zones, respectively, each cell including an oxygen ion conductive solid electrolyte layer (4a, 4c) and a pair of electrodes (16, 18) one of which is exposed to the first or second processing zone, wherein the first pumping cell pumps oxygen out of the first processing zone to control oxygen partial pressure in the first processing zone at a value at which the combustible gas component cannot be burned, while the second pumping cell pumps oxygen into the second processing zone to thereby burn the combustible gas component in the second processing zone, and the concentration of the combustible gas component is determined based on a current flowing or a voltage between the electrodes of the second pumping cell. <IMAGE> <IMAGE>
IPC 1-7
IPC 8 full level
G01N 27/41 (2006.01); G01N 27/416 (2006.01); G01N 27/419 (2006.01); G01N 27/42 (2006.01)
CPC (source: EP US)
G01N 27/419 (2013.01 - EP US)
Citation (search report)
- [PA] EP 0678740 A1 19951025 - NGK INSULATORS LTD [JP]
- [A] US 5049254 A 19910917 - LOGOTHETIS ELEFTHERIOS M [US], et al
- [A] EP 0060944 A1 19820929 - WESTINGHOUSE ELECTRIC CORP [US]
- [A] DE 3742014 A1 19890622 - HARTMANN & BRAUN AG [DE]
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0731351 A2 19960911; EP 0731351 A3 19970402; EP 0731351 B1 20040616; DE 69632703 D1 20040722; DE 69632703 T2 20050609; EP 1306666 A2 20030502; EP 1306666 A3 20050309; JP 3450084 B2 20030922; JP H08247995 A 19960927; US 5879525 A 19990309; US 5893968 A 19990413
DOCDB simple family (application)
EP 96301609 A 19960308; DE 69632703 T 19960308; EP 03001107 A 19960308; JP 4950495 A 19950309; US 61177196 A 19960306; US 8305398 A 19980522